| /* |
| * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "jvmci/jvmciJavaClasses.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/jniHandles.inline.hpp" |
| #include "runtime/fieldDescriptor.inline.hpp" |
| |
| |
| // This macro expands for non-inline functions, in class declarations. |
| |
| #define START_CLASS(name) \ |
| void name::check(oop obj, const char* field_name, int offset) { \ |
| assert(obj != NULL, "NULL field access of %s.%s", #name, field_name); \ |
| assert(obj->is_a(SystemDictionary::name##_klass()), "wrong class, " #name " expected, found %s", obj->klass()->external_name()); \ |
| assert(offset != 0, "must be valid offset"); \ |
| } |
| |
| #define END_CLASS |
| |
| #define FIELD(klass, name, type, accessor, cast) \ |
| type klass::name(jobject obj) { check(JNIHandles::resolve(obj), #name, _##name##_offset); return cast JNIHandles::resolve(obj)->accessor(_##name##_offset); } \ |
| void klass::set_##name(jobject obj, type x) { check(JNIHandles::resolve(obj), #name, _##name##_offset); JNIHandles::resolve(obj)->accessor##_put(_##name##_offset, x); } |
| |
| #define EMPTY_CAST |
| #define CHAR_FIELD(klass, name) FIELD(klass, name, jchar, char_field, EMPTY_CAST) |
| #define INT_FIELD(klass, name) FIELD(klass, name, jint, int_field, EMPTY_CAST) |
| #define BOOLEAN_FIELD(klass, name) FIELD(klass, name, jboolean, bool_field, EMPTY_CAST) |
| #define LONG_FIELD(klass, name) FIELD(klass, name, jlong, long_field, EMPTY_CAST) |
| #define FLOAT_FIELD(klass, name) FIELD(klass, name, jfloat, float_field, EMPTY_CAST) |
| #define OOP_FIELD(klass, name, signature) FIELD(klass, name, oop, obj_field, EMPTY_CAST) |
| #define OBJARRAYOOP_FIELD(klass, name, signature) FIELD(klass, name, objArrayOop, obj_field, (objArrayOop)) |
| #define TYPEARRAYOOP_FIELD(klass, name, signature) FIELD(klass, name, typeArrayOop, obj_field, (typeArrayOop)) |
| #define STATIC_OOP_FIELD(klassName, name, signature) STATIC_OOPISH_FIELD(klassName, name, oop, signature) |
| #define STATIC_OBJARRAYOOP_FIELD(klassName, name, signature) STATIC_OOPISH_FIELD(klassName, name, objArrayOop, signature) |
| #define STATIC_OOPISH_FIELD(klassName, name, type, signature) \ |
| type klassName::name() { \ |
| assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \ |
| InstanceKlass* ik = klassName::klass(); \ |
| oop base = ik->static_field_base_raw(); \ |
| oop result = HeapAccess<>::oop_load_at(base, _##name##_offset); \ |
| return type(result); \ |
| } \ |
| void klassName::set_##name(type x) { \ |
| assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \ |
| assert(klassName::klass() != NULL, "Class not yet loaded: " #klassName); \ |
| InstanceKlass* ik = klassName::klass(); \ |
| oop base = ik->static_field_base_raw(); \ |
| HeapAccess<>::oop_store_at(base, _##name##_offset, x); \ |
| } |
| #define STATIC_PRIMITIVE_FIELD(klassName, name, jtypename) \ |
| jtypename klassName::name() { \ |
| assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \ |
| InstanceKlass* ik = klassName::klass(); \ |
| oop base = ik->static_field_base_raw(); \ |
| return HeapAccess<>::load_at(base, _##name##_offset); \ |
| } \ |
| void klassName::set_##name(jtypename x) { \ |
| assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \ |
| InstanceKlass* ik = klassName::klass(); \ |
| oop base = ik->static_field_base_raw(); \ |
| HeapAccess<>::store_at(base, _##name##_offset, x); \ |
| } |
| |
| #define STATIC_INT_FIELD(klassName, name) STATIC_PRIMITIVE_FIELD(klassName, name, jint) |
| #define STATIC_BOOLEAN_FIELD(klassName, name) STATIC_PRIMITIVE_FIELD(klassName, name, jboolean) |
| |
| COMPILER_CLASSES_DO(START_CLASS, END_CLASS, CHAR_FIELD, INT_FIELD, BOOLEAN_FIELD, LONG_FIELD, FLOAT_FIELD, OOP_FIELD, TYPEARRAYOOP_FIELD, OBJARRAYOOP_FIELD, STATIC_OOP_FIELD, STATIC_OBJARRAYOOP_FIELD, STATIC_INT_FIELD, STATIC_BOOLEAN_FIELD) |
| #undef START_CLASS |
| #undef END_CLASS |
| #undef FIELD |
| #undef CHAR_FIELD |
| #undef INT_FIELD |
| #undef BOOLEAN_FIELD |
| #undef LONG_FIELD |
| #undef FLOAT_FIELD |
| #undef OOP_FIELD |
| #undef TYPEARRAYOOP_FIELD |
| #undef OBJARRAYOOP_FIELD |
| #undef STATIC_OOPISH_FIELD |
| #undef STATIC_OOP_FIELD |
| #undef STATIC_OBJARRAYOOP_FIELD |
| #undef STATIC_INT_FIELD |
| #undef STATIC_BOOLEAN_FIELD |
| #undef STATIC_PRIMITIVE_FIELD |
| #undef EMPTY_CAST |
| |
| // This function is similar to javaClasses.cpp, it computes the field offset of a (static or instance) field. |
| // It looks up the name and signature symbols without creating new ones, all the symbols of these classes need to be already loaded. |
| |
| void compute_offset(int &dest_offset, Klass* klass, const char* name, const char* signature, bool static_field, TRAPS) { |
| InstanceKlass* ik = InstanceKlass::cast(klass); |
| Symbol* name_symbol = SymbolTable::probe(name, (int)strlen(name)); |
| Symbol* signature_symbol = SymbolTable::probe(signature, (int)strlen(signature)); |
| if (name_symbol == NULL || signature_symbol == NULL) { |
| #ifndef PRODUCT |
| ik->print_on(tty); |
| #endif |
| fatal("symbol with name %s and signature %s was not found in symbol table (klass=%s)", name, signature, klass->name()->as_C_string()); |
| } |
| |
| fieldDescriptor fd; |
| if (!ik->find_field(name_symbol, signature_symbol, &fd)) { |
| ResourceMark rm; |
| fatal("Invalid layout of %s %s at %s", name_symbol->as_C_string(), signature_symbol->as_C_string(), ik->external_name()); |
| } |
| guarantee(fd.is_static() == static_field, "static/instance mismatch"); |
| dest_offset = fd.offset(); |
| assert(dest_offset != 0, "must be valid offset"); |
| if (static_field) { |
| // Must ensure classes for static fields are initialized as the |
| // accessor itself does not include a class initialization check. |
| ik->initialize(CHECK); |
| } |
| } |
| |
| // This piece of macro magic creates the contents of the jvmci_compute_offsets method that initializes the field indices of all the access classes. |
| |
| #define START_CLASS(name) { Klass* k = SystemDictionary::name##_klass(); assert(k != NULL, "Could not find class " #name ""); |
| |
| #define END_CLASS } |
| |
| #define FIELD(klass, name, signature, static_field) compute_offset(klass::_##name##_offset, k, #name, signature, static_field, CHECK); |
| #define CHAR_FIELD(klass, name) FIELD(klass, name, "C", false) |
| #define INT_FIELD(klass, name) FIELD(klass, name, "I", false) |
| #define BOOLEAN_FIELD(klass, name) FIELD(klass, name, "Z", false) |
| #define LONG_FIELD(klass, name) FIELD(klass, name, "J", false) |
| #define FLOAT_FIELD(klass, name) FIELD(klass, name, "F", false) |
| #define OOP_FIELD(klass, name, signature) FIELD(klass, name, signature, false) |
| #define STATIC_OOP_FIELD(klass, name, signature) FIELD(klass, name, signature, true) |
| #define STATIC_INT_FIELD(klass, name) FIELD(klass, name, "I", true) |
| #define STATIC_BOOLEAN_FIELD(klass, name) FIELD(klass, name, "Z", true) |
| |
| |
| void JVMCIJavaClasses::compute_offsets(TRAPS) { |
| COMPILER_CLASSES_DO(START_CLASS, END_CLASS, CHAR_FIELD, INT_FIELD, BOOLEAN_FIELD, LONG_FIELD, FLOAT_FIELD, OOP_FIELD, OOP_FIELD, OOP_FIELD, STATIC_OOP_FIELD, STATIC_OOP_FIELD, STATIC_INT_FIELD, STATIC_BOOLEAN_FIELD) |
| } |
| |
| #define EMPTY0 |
| #define EMPTY1(x) |
| #define EMPTY2(x,y) |
| #define FIELD2(klass, name) int klass::_##name##_offset = 0; |
| #define FIELD3(klass, name, sig) FIELD2(klass, name) |
| |
| COMPILER_CLASSES_DO(EMPTY1, EMPTY0, FIELD2, FIELD2, FIELD2, FIELD2, FIELD2, FIELD3, FIELD3, FIELD3, FIELD3, FIELD3, FIELD2, FIELD2) |
| |
